Orchard Audio Starkrimson 25 Mono Premium GaN Amplifier
All Image Credit: Orchard
Orchard Audio has announced the launch of the Starkrimson 25 Mono Premium, the latest evolution in high-performance gallium nitride (GaN) audio amplification. Designed for audiophiles, professionals, and music lovers, it builds upon the success of its predecessor, the Starkrimson mono premium, with enhanced capabilities and refinements. Designed for audiophiles, professionals, and music lovers, the SK25 delivers an even cleaner signal path.
The design leverages cutting-edge advancements in gallium nitride (GaN) transistor technology, with the SK25 achieving a faster transient response and improved high-frequency performance. With its compact and versatile form factor it is said to be “optimized for high-resolution playback, to provides a transparent and immersive listening experience, whether used in home audio setups or professional sound environments”.
Improvements over the original Starkrimson mono premium include:
- Improved switching frequency – 1.1MHz, was 800KHz
- Improved damping factor – >600 @ 1KHz, was >550 @ 1KHz
- Wider bandwidth & improved phas shifts above 20KHZ
- Improved filter components
- Updated modulator and feedback circuits
According to Orchard Audio, “With its next-generation GaN technology, this amplifier comes closer to the ideal of flat wire with gain”

GaN Power Amplifier Module Upgrade
Customers who own a legacy product; Starkrimson Mono, Starkrimson Mono Premium, or Starkrimson Duo, can upgrade to the new Starkrimson 25 design at a special discounted price of $749.95 through the end of May.
Features At A Glance:
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Fully balanced from input to output
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Extremely low noise and distortion
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Power output 150W/200W into 8/4Ω
- Gain 21.5 dB or 16.8 dB (user adjustable by jumpers)
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2-ohm capable
- Universal AC Input: Works from 90 to 264VAC
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Size: 11″ (26.9cm) x 6.1″ (15.5cm) x 3.1″ (7.9cm) – including binding posts
Specifications:
- Gain: 16.8dB or 21.5dB
- Signal-to-Noise Ratio (SNR): > 121.5dB (A-weighted, 22.4kHz BW)
- Residual Noise: < 29.15µV (A-weighted, 22.4kHz BW)
- SINAD @ 5W 1kHz: 105dB into 8Ω (22kHz BW)
- THD @ 0.25W: <0.0040% for 20Hz – 22kHz into 8Ω (45kHz BW)
- THD @ 10W: <0.0018% for 20Hz – 22kHz into 8Ω (45kHz BW)
- THD @ 20W: <0.0018% for 20Hz – 22kHz into 8Ω (45kHz BW)
- THD @ 40W: <0.0033% for 20Hz – 22kHz into 8Ω (45kHz BW)
- THD @ 80W: <0.010% for 20Hz – 22kHz into 8Ω (45kHz BW)
- THD @ 150W: <0.050% for 20Hz – 22kHz into 8Ω (45kHz BW)
- Frequency Response: DC – 80kHz+
- Sensitivity: 5VIN for 150W into 8Ω (16.8dB Gain)
- Sensitivity: 4.1VIN for 200W into 4Ω (16.8dB Gain)
- Sensitivity: 2.9VIN for 150W into 8Ω (21.5dB Gain)
- Sensitivity: 2.4 VIN for 200W into 4Ω (21.5dB Gain)
- Balanced Input Impedance: 44kΩ
- Rated Power (8Ω): 150WRMS (300WPEAK)
- Rated Power (4Ω): 200WRMS (400WPEAK)
- Rated Power (4Ω): 100WRMS (200WPEAK)
- Max Power (8Ω) (CEA-2006) (1% SINAD): 198WRMS (396WPEAK)
- Max Power (4Ω) (CEA-2006) (1% SINAD): 388WRMS (776WPEAK)
- Damping Factor: > 700 @ 1kHz
- Weight: 8 lbs
- Dimensions: 14 × 10 × 6 inches
MSRP (each):
- US: $1,249.95, special launch price of $1,099.95
For more information visit the Orchard Audio web site.
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